Biological Psychology,
Journal Year:
2024,
Volume and Issue:
192, P. 108845 - 108845
Published: July 7, 2024
Light
regulates
both
image-
and
various
non-image
forming
responses
in
humans,
including
acute
effects
on
attention
affect.
To
advance
the
understanding
of
light's
immediate
effects,
this
systematic
review
describes
monochromatic/narrow
bandwidth
polychromatic
white
light
during
daytime
distinct
aspects
(alertness,
sustained
attention,
working
memory,
attentional
control
flexibility),
measures
affect
(self-report
measures,
performance-based
tests,
psychophysiological
measures)
healthy,
adult
human
subjects.
Original,
peer-reviewed
(quasi-)
experimental
studies
published
between
2000
May
2024
were
included
according
to
predefined
inclusion
exclusion
criteria.
Study
quality
was
assessed,
results
synthesized
across
grouped
interventions;
monochromatic/narrowband-width
or
(regular
white,
bright
with
high
correlated
color
temperature
(CCT)).
Results
from
(n
=
62)
showed
that
alertness
memory
most
affected
by
light.
Electroencephalographic
markers
improved
exposure
narrow
long-wavelength
light,
regular
CCT.
Self-reported
testing
flexibility
inconclusive.
Performance-based
only
influenced
Polychromatic
exerted
mixed
self-reported
Studies
strongly
heterogeneous
terms
stimuli
characteristics
reporting
variables
influencing
effects.
LEUKOS The Journal of the Illuminating Engineering Society of North America,
Journal Year:
2023,
Volume and Issue:
20(2), P. 127 - 147
Published: July 12, 2023
This
is
a
systematic
review
of
studies
assessing
the
effects
polychromatic
(white)
ambient
light
on
mood
in
healthy
adults.
We
hypothesized
that
higher
melanopic
equivalent
daylight
illuminances
(EDI)
would
be
associated
with
better
mood.
The
search
identified
2,994
publications,
which
14
met
inclusion
criteria.
resulting
database
included
spectral
power
distributions,
illuminances,
measures,
and
methods.
used
CIE
S026
toolbox
to
calculate
five
α-opic
EDI
values
characterize
exposures
each
study.
Regression
models
tested
associations
between
predictors
EDI,
duration,
timing,
outcome,
results
showed
none
were
significantly
(all
estimates
<0.044,
p
>
.490).
A
longer
duration
exposure
<0.154,
<
.018)
timing
morning
<0.233,
.001)
mood,
but
these
did
not
persist
after
adjusting
for
data
being
nested
within
studies.
Average
scores
remained
reasonably
consistent
across
different
profiles,
suggesting
profiles
might
influence
Notably,
had
an
experimental
condition
peak
greater
than
other
values,
therefore
association
could
tested.
Future
research
designs
should
contrast
selected
parameters
identify
photoreceptors
involved
processes
interest.
LEUKOS The Journal of the Illuminating Engineering Society of North America,
Journal Year:
2023,
Volume and Issue:
20(3), P. 291 - 309
Published: Dec. 1, 2023
Non-image
forming
effects
of
electric
light
can
be
employed
to
address
problems
related
individuals'
productivity
in
isolated
and
confined
extreme
environments
(ICEs).
A
systematic
review
meta-analysis,
registered
at
PROSPERO
(Registration
ID:
CRD
42022326269),
were
conducted
thoroughly
evaluate
the
efficacy
daytime
artificial
intervention
on
alertness,
cognition,
mood
using
psychological,
cognitive
performance,
physiological
multimodal
measures.
Twenty-eight
studies
identified
after
an
extensive
search
scope
major
electronic
databases
including
Web
Science,
Embase,
PubMed,
Scopus,
PsycINFO.
Results
revealed
that
use
interventions
significantly
improved
alertness
reduced
alpha
wave
electroencephalogram,
whereas
no
significant
difference
was
observed
for
mood.
Subgroup
analyses
by
attribute
suggested
parameters
time
characteristics
affected
diurnal
with
varying
degrees.
Future
work
investigating
correlation
between
two
variables
is
needed
further
our
understanding
impact
human
responses.
This
study
its
methodology
useful
researchers
as
they
establish
lighting
design
guidelines
capable
improving
functions
ICEs.
Lighting Research & Technology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 28, 2024
The
non-image
forming
effects
of
light
are
moderated
by
various
aspects
such
as
dose,
spectrum
or
temporal
and
spatial
patterns.
One
them,
the
distribution
within
field
view,
has
been
scarcely
researched.
Although
few
studies
suggest
on
melatonin
secretion
during
night-time,
daytime
remain
unknown.
In
this
project,
we
investigated
effect
three
directions
–
from
above,
below
side
each
illuminating
different
retinal
regions.
luminance
size
source
were
kept
constant,
thus
realising
same
vertical
illuminance
melanopic
irradiance
at
eye
for
all
scenes.
Forty
participants
underwent
a
two
hour
protocol
cognitive
tasks
subjective
assessments
alertness
performance.
Our
results
stronger
forming-effects
stimulation
with
lighting
whereas
differed
slightly.
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: April 30, 2024
Abstract
Drowsiness
while
driving
negatively
impacts
road
safety,
especially
in
truck
drivers.
The
present
study
investigated
the
feasibility
and
alerting
effects
of
a
daylight-supplementing
in-truck
lighting
system
(DS)
providing
short-wavelength
enriched
light
before,
during,
after
driving.
In
within-participants
design,
eight
drivers
drove
fully-loaded
under
wintry
Scandinavian
conditions
(low
daylight
levels)
with
DS
or
placebo
for
five
days.
Subjective
objective
measures
alertness
were
recorded
several
times
daily,
evening
melatonin
levels
three
per
condition.
significantly
increased
daytime
exposure
without
causing
negative
side
addition,
no
carry-over
observed
on
sleepiness
nighttime
sleep
quality.
Moreover,
(i.e.,
psychomotor
vigilance)
before
was
improved
by
bright
exposure.
This
effect
accompanied
subjective
morning.
field
demonstrated
that
able
to
increase
low-daylight
improve
(e.g.,
during
rest
periods).
Further
studies
are
warranted
investigate
in-cabin
performance
safety
measures.
Biological Psychology,
Journal Year:
2024,
Volume and Issue:
192, P. 108845 - 108845
Published: July 7, 2024
Light
regulates
both
image-
and
various
non-image
forming
responses
in
humans,
including
acute
effects
on
attention
affect.
To
advance
the
understanding
of
light's
immediate
effects,
this
systematic
review
describes
monochromatic/narrow
bandwidth
polychromatic
white
light
during
daytime
distinct
aspects
(alertness,
sustained
attention,
working
memory,
attentional
control
flexibility),
measures
affect
(self-report
measures,
performance-based
tests,
psychophysiological
measures)
healthy,
adult
human
subjects.
Original,
peer-reviewed
(quasi-)
experimental
studies
published
between
2000
May
2024
were
included
according
to
predefined
inclusion
exclusion
criteria.
Study
quality
was
assessed,
results
synthesized
across
grouped
interventions;
monochromatic/narrowband-width
or
(regular
white,
bright
with
high
correlated
color
temperature
(CCT)).
Results
from
(n
=
62)
showed
that
alertness
memory
most
affected
by
light.
Electroencephalographic
markers
improved
exposure
narrow
long-wavelength
light,
regular
CCT.
Self-reported
testing
flexibility
inconclusive.
Performance-based
only
influenced
Polychromatic
exerted
mixed
self-reported
Studies
strongly
heterogeneous
terms
stimuli
characteristics
reporting
variables
influencing
effects.
